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    <!--
         ...  运算符 将数组转为【参数序列】
      -->
    <script>
        const BANZHANG = ["1","2"];
        console.log(...BANZHANG)
        // 应用场景
        const A =["1","2"];
        const B = ["3","4"];
        let c =[...A,...B];
        console.log(c)
        // 深拷贝
        const D = [...A];
        D[0] = "5";
        console.log(A)
        console.log(D)
        // 将DOM的伪数组变成真正意义上的数组
        let divs = document.getElementsByTagName("div");
        console.log(divs)
        const divArr = [...divs];
        console.log(divArr)
    </script>
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